Steam-boiler



PATENTED JAN. 5, 1904. 'v

5. L. MARPLB. STEAM BOILER.

APPLIOATIOH FILED MAY 25. 1903.

N0 MODEL.

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UNITE STATES Patented January 5, 1904.

PATENT ()FFICE.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 748,765, dated January5, 1904. Application filed May 2a, 1903. Serial No. 158,841. (No model.)

at Clairton, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Improvementin Steam-Boilers, of

which the following is a specification.

My invention relates to improvements in the construction of asteam-boiler, and has for its object the rapid generation of steam,economy of fuel, and safety from total destruction in case of collapseor explosion.

With these objects in view the invention consists in certain novelfeatures of construction hereinafter described and claimed, and shown inthe accompanying drawings, in which- Figure 1 is a side elevation of theboiler. Fig. 2 is a top plan view thereof. Fig. 3 is an inner end viewof one of the headers, the drums and tubes being removed. Fig. 4: is asimilar view of the outer end of the header.

Referring specifically to the drawings, a indicates ahorizontally-disposed steam and water drum, having a similar drum 1) oneach side thereof. Both ends of the drums communicate with headers c,which extend below the drums, as at d. A mud-.drum e is located belowthe drums a and b and is connected to the headers by a series ofwatertubes f, extending therefrom to the headers below the drums at andb. The tubes slant downwardly toward the mud-drum, which faance torupture is great, and it is not liable to total destruction in case ofcollapse or explosion. 1

What I claim as my invention, and desire to secure by Letters Patent, is

A boiler comprisinga horizontally-disposed drum, a similar drum oflesser area on each side thereof, a header on each end of the drumscommnnicatin g therewith,a mud-drum between the headers, and tubesextending upwardly from the mud-drum to each header, substantially asdescribed.

In testimony whereof I have. signed my name to this specification in thepresence of two subscribing witnesses.

SAMUEL LINDON MARPLE.

Witnesses:

A. MARPLE, L. T. PARVIS.

